- Brittingham, Isabella, by Robert Stockman. (1995)
- Letter to Grace Holley, by Abdu'l-Bahá. Shoghi Effendi, trans. (1919-01-28) Short message of greeting and praise.
- Letter to Isabella Brittingham on Reincarnation and Return, by Edward C. Getsinger. (1916-04-16) A letter written by Getsinger read before the Washington D.C., Baha’i Assembly, April 16, 1916, to "Mrs. B," presumably Isabella Brittingham.
- Promoting Peace: 100 Years of the Baha'i Faith in Santa Paula, California, 1914-2014, by Anne King Sadeghpour. (2017) Detailed history of the community in southern California, including references to Marzieh Gail, Ethelwyn Drew Hall, Florence Mayberry, Molly King, the Yamamotos, Asadullah Fadil-i-Mazandarani, Guy Murchie, Isabella Brittingham, Louise Waite, et al.
- Revelation of Bahaullah in a Sequence of Four Lessons, The, Isabella D. Brittingham, comp. (1902-02) One of the earliest English-language histories of the Faith, written to prove the truth of Bahá'u'lláh's revelation through Biblical prophecy.
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